Optical losses of AgClBr crystals and fibers in the middle infrared
Source abstract
Abstract
Abstract The porosity and the optical properties were measured in single crystals of AgClBr, and in rods and fibers of different diameters extruded from these crystals. It was found that the porosity, the absorption and the scattering at 10.6 μm increased, when the sample diameter decreased. We suggest that scattering in the samples is mainly due to the pores and we used infrared spectral analysis and Mie theory to calculate the distribution of these pores. We found that the average radius of the pores was 0.4–0.6 μm and the number of scatterers per unit volume was 8 × 109–2.5 × 1011 cm−3. Both increased when the rod diameter decreased. The increase in absorption was consistent with a theoretical model ascribing the absorption to cation vacancies localized at charged dislocations.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Thermography and Photoacoustic Techniques · Optical and Acousto-Optic Technologies · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
Show source-provided references
1. Harrington · 2004
2. L.N. Butvina, E.M. Dianov, N.V. Lichkova, V.N. Zavgorodnev, I. Kuepper, Crystallinesilver halide fibers with optical losses lower than 50dB/km in broad IR region and their applications, in: E.M. Dianov (Ed.), Advances in Fiber Optics, Proc. SPIE 4083, 2000, pp. 238–253.10.1117/12.385651 ↗
3. Polycrystalline fibers
4. L.N. Butvina, E.M. Dianov, Optical absorption by free carriers in materials for IR fibers, in: P. Klocek (Ed.), Infrared Optical Materials and Fibers III, Proc. SPIE 484, 1984, pp. 21–24.10.1117/12.943138 ↗
5. Optical properties of mixed silver halide crystals and fibers10.1063/1.354191 ↗
6. Effects of thermal and mechanical treatment on the luminescence of AgBr crystals
7. Loss mechanisms and measurements in clad glass fibers and bulk glass10.1364/JOSA.61.000143 ↗
8. Inverse-square wavelength dependence of attenuation in infrared polycrystalline fibers10.1364/OL.8.000223 ↗
9. Gilman · 1963
10. Calorimetric measurements of weakly absorbing materials: theory10.1364/AO.18.001546 ↗
11. Development of a calorimetric method for making precision optical absorption measurements10.1364/AO.12.000984 ↗
12. Measurement techniques for small absorption coefficients: recent advances10.1364/AO.16.002827 ↗
13. Analysis of laser calorimetric data10.1364/AO.16.002837 ↗
14. Booth · 1961 · vol. II
15. Absorption measurements of mixed silver halide crystals and fibers by laser calorimetry10.1364/AO.33.000117 ↗
16. Absorption spectrum of silver bromide crystals and fibers in the 9–11μm wavelength range10.1063/1.363897 ↗
17. Medical applications of infrared transmitting silver halide fibers10.1109/2944.577309 ↗
18. L.N. Butvina, V.V. Vojtsekhosky, E.M. Dianov, A.M. Prokhorov, Light scattering by voids in polycrystalline fibers, in: P. Klocek (Ed.), Infrared Optical Materials and Fibers V, Proc. SPIE 843, 1987, pp. 105–110.10.1117/12.968221 ↗
19. van de Hulst · 1957
20. Bohren · 1983